AASHTO T 323-03 (2020) PDF Download

AASHTO T 323-03 (2020) standard is used to determine the shear strength at the interface between bonded layers of Portland cement concrete. It specifically focuses on testing the drilled concrete core samples taken from a bonded concrete overlay pavement or bridge deck. The test is conducted on 100-mm diameter cores of Portland cement concrete.

This standard is applicable when the concrete overlay thickness is at least 25 mm and the thickness of the base concrete is at least 50 mm. The purpose of this test is to evaluate the bond strength between two layers of concrete and determine the ability of the bonded layers to resist shear forces. The results of this test can be used to assess the quality and durability of the bonded layers and ensure the long-term performance of the concrete structure.